Synopsis: The film starts in the ocean, as a Russian submarine, the Sevastopol, is transporting a highly dangerous computer device underwater. The device is accessed using a special cross-like key that is split in two. The crew aboard the submarine notice what appears to be an enemy sub nearby launching a torpedo at them. They fire their own torpedo’s, but soon are surprised to discover both the other sub and their torpedo’s disappear, as if they were never there.